Leap Motion gesture control technology
3Doodler is a $75 3D printing pen eagerly awaiting your Kickstarter funding
DNP Beercade The Last Barfighter replaces arcade coin slot with beer tap
Avegant's head-mounted virtual retinal display offers brilliant definition using project light to mimic natural vision.
Bowers & Wilkins A7
Tobii REX eye-tracker. $1000